Is there a simple process in ArcMap v10.2 that will allow me to overlay three raster images, whereby any obscured pixels will be deleted in the output file?
I do not want to retain the values of any pixels that are being covered by upper layers, because any overlapping pixels will alter future statistics that I run to determine count.
This is how I envision my final raster:
The bottom layer is a supervised land cover classification raster that has been smoothed over with a 7 x 7 focal statistic (comprised of five classes), which is meant to be my "base" layer. The middle and top layers are both reclassified images of the bottom layer, and have been smoothed over with a finer focal statistic to retain some detail.
All of these rasters are the same extent and pixel size -- based on Landsat 8 imagery.
Apparently, I am looking for some sort of unweighted overlay tool that simultaneously removes underlying pixels but I have not been able to find this capability in the Toolbox. I have already tried using the Merge tool, Combine tool, and Mosaic To New Raster tool.
After playing around with the advice given in the comments, I believe using the Con expression as part of an equation in the Raster Calculator would yield the best results. I would like to build an expression that states "if the value of [middle layer] is 2 then keep [middle layer's] values, but if the value of [middle layer] is not 2 then use [bottom layer's] values." Then I would perform a similar calculation to stack the top layer over the combined bottom and middle layers. If there is a way to stack all three layers using one equation, that would be preferred.